We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Efficiency in Carbon Dioxide Fixation into Cyclic Carbonates: Operating Bifunctional Polyhydroxylated Pyridinium Organocatalysts in Segmented Flow Conditions.
- Authors
Poletti, Lorenzo; Rovegno, Caterina; Di Carmine, Graziano; Vacchi, Filippo; Ragno, Daniele; Brandolese, Arianna; Massi, Alessandro; Dambruoso, Paolo
- Abstract
Novel polyhydroxylated ammonium, imidazolium, and pyridinium salt organocatalysts were prepared through N-alkylation sequences using glycidol as the key precursor. The most active pyridinium iodide catalyst effectively promoted the carbonation of a set of terminal epoxides (80 to >95% yields) at a low catalyst loading (5 mol%), ambient pressure of CO2, and moderate temperature (75 °C) in batch operations, also demonstrating high recyclability and simple downstream separation from the reaction mixture. Moving from batch to segmented flow conditions with the operation of thermostated (75 °C) and pressurized (8.5 atm) home-made reactors significantly reduced the process time (from hours to seconds), increasing the process productivity up to 20.1 mmol(product) h−1 mmol(cat)−1, a value ~17 times higher than that in batch mode.
- Subjects
CARBON dioxide fixation; WASTE recycling; CARBONATION (Chemistry); EPOXY compounds; NITROALKENES; CARBONATES; FLOW chemistry
- Publication
Molecules, 2023, Vol 28, Issue 4, p1530
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules28041530